Description
Product Overview
SeamlessBio rHSA Economy Grade is a cost-effective, animal-free recombinant human serum albumin expressed in genetically modified rice endosperm (Oryza sativa). Purified by single-step chromatography to 90–99% purity with endotoxin <5 EU/mg — the practical choice for IVD blocking reagents, diagnostic reference materials, cosmetic formulations, and method development where budget and throughput matter more than ultra-low endotoxin.
Fully TSE/BSE-free, no animal raw materials used at any stage. Available as lyophilised powder in pack sizes from 10 g to 500 g, delivered from EU stock. For applications requiring ≥99% purity and ultra-low endotoxin (<0.125 EU/mg), see the rHSA Premium Grade. Explore the full Human Sera & Albumin Portfolio.
Technical Specifications
| Parameter | Specification |
|---|---|
| Expression system | Rice (Oryza sativa) endosperm — 100% animal-free |
| Purity (SDS-PAGE) | 90–99% — single-step chromatography |
| Bacterial endotoxins | <5 EU/mg (LAL method) |
| pH | 6.0–8.0 |
| Form | Lyophilised powder |
| Reconstitution | Sterile PBS or 0.9% NaCl; fully soluble within 15 min |
| Storage | 2–8 °C; shelf life 5 years from manufacture |
| TSE/BSE status | TSE/BSE-free — no animal raw materials used |
| Manufacturer | Wuhan Healthgen Biotechnology Corp. (Oryzogen); distributed under SeamlessBio label |
| Regulatory | For Research Use Only (RUO). CoA, CoO and SDS on request. |
Applications
| Application | Function of rHSA Economy Grade |
|---|---|
| IVD reagent manufacturing | Cost-effective blocking agent and carrier protein for ELISA kits, lateral flow assays, immunoturbidimetric assays, and clinical chemistry reagents where standard endotoxin tolerance applies. |
| Diagnostic reference standards | Matrix protein for calibrators and quality control materials in routine diagnostic assays. |
| Cosmetics & personal care | Animal-free, human-identical protein ingredient for skin care, hair care, and anti-ageing formulations. |
| Enzyme & protein stabilisation | Carrier and stabiliser for enzymes, antibodies, and other proteins in research buffers and storage solutions. |
| Method development & screening | Economical option for assay development, protein binding studies, and screening experiments where premium purity is not required. |
Complete SeamlessBio rHSA Portfolio
| Grade | Purity | Endotoxin | Best For |
|---|---|---|---|
| rHSA Premium Grade | ≥99% | <0.125 EU/mg | Cell culture, ATMP, IVD |
| rHSA Economy Grade (this product) | 90–99% | <5 EU/mg | IVD blocking, cosmetics, method dev |
| rHSA CHO-Expressed | ≥95% | <1 EU/mg | ADME, drug formulation |
Available Formats
| Format | Size |
|---|---|
| Lyophilised powder | 10 g |
| Lyophilised powder | 100 g |
| Lyophilised powder | 500 g |
Key Benefits
Batch Reservation
Reserve validated lots up to 36 months for reproducible long-term workflows.
Full Documentation
CoA, BSE/TSE statement, CoO and SDS — from ISO 9001 and ISO 13485 certified partner facilities. Additional documents on request.
EU & Swiss Supply
Sourced from certified EU and Swiss partner facilities — fast delivery across EU, UK and Switzerland, full documentation included.
Frequently Asked Questions
What is the difference between rHSA Economy Grade and rHSA Premium Grade?
rHSA Economy Grade is purified by single-step chromatography to 90–99% purity with endotoxin <5 EU/mg — optimised for cost-sensitive applications such as IVD blocking, diagnostic matrix proteins, and cosmetic formulations. rHSA Premium Grade achieves ≥99% purity and ultra-low endotoxin (<0.125 EU/mg) through multi-step chromatography, making it suitable for cell culture, ATMP manufacturing, and stringent IVD applications. If your process specifies endotoxin below 1 EU/mg or purity ≥99%, upgrade to the Premium Grade.
Is rHSA Economy Grade suitable for use in ELISA kits and lateral flow assay manufacturing?
Yes — rHSA Economy Grade is well suited for IVD reagent manufacturing where endotoxin ≤5 EU/mg is acceptable. It functions as a blocking agent, carrier protein, and diluent matrix in ELISA kits, lateral flow strips, and immunoturbidimetric reagents. For lateral flow assay conjugate pads and membranes where tighter endotoxin control is required, we recommend evaluating the rHSA Premium Grade.
Why choose rice-expressed rHSA over plasma-derived HSA for IVD and cosmetic applications?
Rice-expressed rHSA (Oryza sativa endosperm system) is 100% animal-free and TSE/BSE-free, eliminating the pathogen transmission risks and lot-to-lot variability associated with plasma-derived Human Serum Albumin (HSA). For IVD manufacturers, this simplifies regulatory documentation. For cosmetics, it supports cruelty-free and vegan labelling claims. The protein is structurally identical to native HSA — same amino acid sequence, same functional properties.
What pack sizes are available and is batch reservation possible?
rHSA Economy Grade is available as lyophilised powder in 10 g, 100 g, and 500 g pack sizes. Batch reservation is available for up to 36 months — contact our team with your required volume and project timeline to hold a validated lot across your production programme. Custom quantities may be available on request.
What documentation is supplied with rHSA Economy Grade?
Every order is accompanied by a Certificate of Analysis (CoA) with lot-specific test results. Additional documentation — including BSE/TSE statements, Certificate of Origin (CoO), Safety Data Sheet (SDS), and sterility certificates — is available on request. Products are manufactured at ISO 9001 and ISO 13485 certified partner facilities.
Request a Quote or Sample
48h response · EU & Swiss Supply · Batch reservation available · Full documentation
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